SOURCE: Needle doesn't move the problem isn't the foot pedal
Same problem with my 400. I took it in to dealer and they said main computer board on my machine would have to be replaced. Fortunately, they agreed to get it fixed for me. My machine is 2 years old. How old is yours? I wonder if this could be a manufacturer defect on the machine? Maybe this needs to be addressed with Viking Husqvarna Corporate.
SOURCE: bobbin holder won't stay put
If the bobbin case/holder is trying to lift up and the thread is staying partly around it, your bobbin case may have turned part way.
Remove the needle plate and the bobbin case. The outer edges of the bobbin case should be very smooth. I suspect you may see a needle hole in the flat area that was under the foot. If so, you will probably wish to take it to your dealer and show them. They may smooth it or recommend replacing it. When the bobbin case is placed back into the hook cup that it sets in, the retainer at the 11 o'clock position on it should only allow the case to lift up about 0.8 to 1mm at the most. If it will lift up more than this, press down firmly on the retainer and move it closer to the bobbin case. You must have enough room for the thread to pass between the retainer and the bobbin case, but too much clearance will allow the bobbin case to turn in the machine and it will be damaged by the needle.
SOURCE: I have a Husqvarna Emma sewing machine. The
I was able to gain entrance into the area by taking out 1 screw (star head), slightly pulling on the plastic compartment to cause a small opening. I then tilted the machine and the needle fell out. The screw is located on the rear of the sewing machine, right behind the bobbin compartment. A flat head screw is also needed to "Pry" open the plastic.
SOURCE: husqvarna sewing machine - viking 400
Take to authorized Husqvarna Viking dealer for repair. This is not something that can be done by the owner. Check Husqvarna Viking website for dealer closest too you.
SOURCE: Sewing thick fabric and machine won't send it through
Sergers are not really meant to sew very thick material. The blades have a maximum amount of range, or thickness that they can reach to cut. If you go outside that range, get ready for a big repair bill! You can break loopers and even the needle plate when you "push" a serger. My advise would be to use you sewing machine for the, "pounding" work. The type of material matters too, A thick Quilt like fabric can be sewn becatuse it's not dense material. A thinner harder denim could max out at 3 layers because of it"s hard finish. If the fabric you're sewing isn't dense like, you could just need new knives.
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